Re: inotify problem

Same here (SuSE 11.4, Perl 5.14.1, Linux::Inotify2 V1.22) - works.

As AM already said, it depends on how you change the file and if you rename the original file during the process. Try the following changes, run stat file_to_watch before and after your experiment.

 ## my $w = $notify->watch ($file_to_watch, IN_MODIFY, \&on_change) or
+ die $!;
 my    $w = $notify->watch ($file_to_watch, IN_MODIFY | IN_MOVE_SELF, 
+\&on_change2) or die $!;

...
sub on_change2 {
  my($e) = @_;

  print $e->fullname, " changed ";
  print " and also moved!" if $e->IN_MOVE_SELF;
  print "\n";
}
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E.g., if I mix edit the file using Emacs and echo, the program stops reporting changes. If I append to the Emacs backup file (file_to_watch~) the modifications are reported again. The original file is watched, regardless of the fact that it has been renamed.

You could monitor the (file-name-)changes (IN_MOVE_SELF) and just re-init the watcher to keep track of further changes applied to the file identified by its name, not by its inode.

In Section Seekers of Perl Wisdom